AirHint found the following cheapest return flights from Washington (DCA) to Ho Chi Minh City (SGN) in August 2025 (see full year).

Return flights

25 Aug - 23 Sep	Korean Air
04 Aug - 04 Sep	Korean Air
06 Aug - 18 Aug	Korean Air
09 Aug - 20 Aug	Korean Air
03 Aug - 20 Aug	Korean Air
20 Aug - 27 Aug	United
02 Aug - 12 Aug	Korean Air
06 Aug - 05 Sep	Korean Air
05 Aug - 03 Sep	China Airlines
05 Aug - 05 Sep	China Airlines
13 Aug - 12 Sep	China Airlines
04 Aug - 05 Sep	Korean Air
04 Aug - 29 Aug	Alaska Airlines
14 Aug - 31 Aug	Alaska Airlines
01 Aug - 31 Aug	China Airlines

Also check the deals for one-way flights from Washington to Ho Chi Minh City in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Washington to Ho Chi Minh City in August from $851

Return flights